Note: It is possible that the SP1 restore point may be removed due to disk space very soon after SP1 is installed. If it is not present then the use of System Restore to return to a pre-SP1 state may not be possible.

1. Close any open programs.

2. From the Windows Vista™ default Start menu, click All Programs, Accessories, System Tools, and then click System Restore.

3. In the User Account Control dialog box, click Continue.
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4. In the Restore system files and settings dialog box, select Choose a different restore point, and then click Next.
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5. In the Choose a restore point dialog box, select Install: Windows Vista Service Pack 1 and then click Next.
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6. In the Confirm your restore point dialog box, click Finish.
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7. In the System Restore dialog box, click Yes.
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8. The computer makes the appropriate changes.
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9. The computer restarts.

10. After the computer returns to Windows, in the System Restore dialog box, click Close.
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11. Removal is complete.